OlukaDenis

import android.annotation.TargetApi
import android.content.Context
import android.content.ContextWrapper
import android.content.pm.PackageManager
import android.util.Base64.*
import timber.log.Timber
import java.nio.charset.StandardCharsets
import java.security.MessageDigest
import java.security.NoSuchAlgorithmException

OlukaDenis

.list-item::after {
  background-image: url('data:image/svg+xml;charset=utf-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><path fill="none" stroke="black" stroke-width="4" stroke-miterlimit="10" d="M4.75 1.5l6.5 6.5-6.5 6.5"/></svg>');
  background-size: 8px 8px;
  background-repeat: no-repeat;
  content: '';
  display: inline-block;
  height: 8px;
  margin-left: 4px;  
  width: 16px;
}

OlukaDenis

.list-item:nth-of-type(odd){
 background-color: slategrey;
}

OlukaDenis

.list-item:nth-child(2n-1){
 background-color: slategrey;
}

OlukaDenis

.list-item:hover {
  background-color: aliceblue;
}

.list a:link{
  color: black;
}

.list a:active{
  color: green;

OlukaDenis

<div class="container">
  <h1>Top 5 Languages </h1>
  <p>In the last year, developers collaborated in more than 370 primary languages on GitHub. The following are the the top five languages with more contributions on GitHub</p>
  <div class="list">
    <ul>
      <li class="list-item"> <a href="#"> Javascript </a> </li>
      <li class="list-item"> <a href="#"> Python </a> </li>
      <li class="list-item"> <a href="#"> Java </a> </li>
      <li class="list-item"> <a href="#"> PHP </a> </li>
      <li class="list-item"> <a href="#"> C# </a> </li>

OlukaDenis

selector:pseudo-class {
 property:value;
}

OlukaDenis

function palindromeCheck(){
    let word = prompt("Write a word:")
    let collection = []
    //adding letters from word to collection
    for(let i = 0; i < word.length; i++ ){
        collection.push(word[i]);
    }

    this.front = function(){
        return collection[0]

OlukaDenis

function stairCase(n){
    let arr = Array(n-1).fill(' ')
    
    for (let i = n-1; i >= 0; i--) {
        arr[i] = '#';
        console.log(arr.join(''));
    }
}

stairCase(6)

OlukaDenis

function diagonalDifference(arr) {
    let left_diagonal = 0
    let right_diagonal = 0
    let total = 0

    for (let i = 0; i < arr.length; i++){
        left_diagonal += arr[i][i]

        right_diagonal += arr[arr.length - 1 - i][i]